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12473181864 = 233211131963761
BaseRepresentation
bin10111001110111010…
…11010011010101000
31012012021111021211200
423213131122122220
5201021113304424
65421411324200
7621045203463
oct134735323250
935167437750
1012473181864
115320871170
1225012b0660
13123a1b9cb0
148647d22da
154d008c8c9
hex2e775a6a8

12473181864 has 192 divisors, whose sum is σ = 41776862400. Its totient is φ = 3305318400.

The previous prime is 12473181829. The next prime is 12473181869. The reversal of 12473181864 is 46818137421.

It is not an unprimeable number, because it can be changed into a prime (12473181869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163744 + ... + 227504.

It is an arithmetic number, because the mean of its divisors is an integer number (217587825).

Almost surely, 212473181864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12473181864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20888431200).

12473181864 is an abundant number, since it is smaller than the sum of its proper divisors (29303680536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12473181864 is a wasteful number, since it uses less digits than its factorization.

12473181864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63816 (or 63809 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The spelling of 12473181864 in words is "twelve billion, four hundred seventy-three million, one hundred eighty-one thousand, eight hundred sixty-four".